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Virginia's HB1431: A Game-Changer for Homeowners and Builders – Is Your Septic Business Ready?

The onsite wastewater industry in Virginia is on the brink of a significant shift. House Bill 1431, recently passed by the Virginia General Assembly, introduces new standards and processes for alternative onsite wastewater systems. This legislation will reshape how businesses approach onlot treatment, potentially streamlining approvals. Leading the way with innovative solutions, Anua will guide you through these changes and help you prepare for the future of possibilities.

Key Takeaways from Virginia's HB1431 

1. "Treatment Level 3" (TL-3) standard requires effluent with ≤10 mg/L BOD and TSS

2. Streamlined "general approval" process for qualifying treatment units

3. Address the need for upgrades to existing systems

4. Opportunities for innovation in treatment technologies

5. Environmental and public health benefits from more options to solve challenges

6. Anua offers six TL-3 sustainable treatment options to meet any challenge

7. The "building blocks" approach offers flexibility for designers and installers

8. Expert support and tailored solutions available for navigating the transition

Unpacking HB1431

At its core, HB1431 establishes a new "general approval" process for treatment units used in alternative on-site sewage systems. The bill expands the "Treatment Level 3" standard, which requires effluent to have a five-day biochemical oxygen demand and total suspended solid average concentrations of 10 mg/L or less. The bill aims to provide more TL-3 options for homeowners, property owners, builders, and land developers.

The legislation also outlines a pathway for treatment units to receive general approval without extensive field testing, provided they meet specific certification requirements. This change could significantly speed up the approval process for new technologies, fostering innovation in the sector.

Industry Implications

The implications of HB1431 are far-reaching. For manufacturers and technology developers, the streamlined approval process opens doors for bringing new, innovative solutions to market more quickly. However, it also challenges existing systems that may need upgrades to meet the new standards.

Engineers and installers must familiarize themselves with the new requirements and adjust their designs and installation practices to remain up-to-date with the best available technology. Onsite wastewater professionals must stay informed about these changes to ensure compliance and maintain their competitive edge.

Is Your Business Ready?

Now is the time to assess your current systems and practices against the new standards set by HB1431. Are your treatment units capable of consistently achieving Treatment Level 3 effluent quality? If not, what upgrades might be necessary? It is crucial to start this assessment early, as the timeline for compliance and implementation may be shorter than you think.

Anua's Proactive Approach

At Anua, we have anticipated these industry shifts and developed multiple solutions that meet and exceed the revised standards. Our innovative "building blocks" approach to onsite wastewater management allows for flexible, adaptable systems that can be easily modified to meet changing regulations.

For instance, our BioCoir and Puraflo Peat Biofilter systems are already TL-3 listed. Under HB1431, AeroCell, PuraSys SBR, Puraflo Dn, and Puraflo Coir are eligible for TL-3 listing. These systems exemplify how cutting-edge technology can align with stringent regulatory requirements while providing affordable, efficient, and reliable wastewater treatment.

BioCoir TL-3 approved septic
Anua BioCoir - TL-3 listed

Navigating the Transition

As you prepare your business for these changes, consider the following steps:

  1. Conduct a thorough review of your current systems and practices.

  2. Identify any gaps between your current capabilities and the new requirements.

  3. Develop a plan for upgrades or changes needed to achieve compliance.

  4. Seek expert advice on the most cost-effective and efficient ways to meet the new standards.

Anua is here to support you through this transition. Our team of experts can provide compliance assessments, technical support, and tailored solutions to help your business adapt to the new regulatory landscape.

The Bigger Picture

While adapting to new regulations can be challenging, it is essential to recognize the broader benefits. Evolving and changing treatment standards contribute to improved environmental protection and public health. Moreover, as regulations change, businesses that adapt quickly to HB1431 will be better positioned to be a client resource and realize future success.


Virginia's HB1431 is indeed a game-changer for the onsite wastewater industry. It challenges us to elevate our standards and innovate our practices. At Anua, we see this as an opportunity to create more effective, efficient, and environmentally friendly solutions.

Is your business ready for this new era? If you are unsure or need support in navigating these changes, we are here to help. Contact Anua today for an assessment or to learn more about our HB1431-ready solutions or find a local authorized designer, installer, or service provider in your area. Together, we can turn this regulatory change into an opportunity for growth and innovation in clean water technology.

Frequently Asked Questions

What is "Treatment Level 3" or “TL-3” defined by HB1431?

Treatment Level 3 refers to effluent treated to produce five-day biochemical oxygen demand and total suspended solid average concentrations equal to or less than 10 milligrams per liter. This standard ensures a high level of treatment, contributing to better environmental and public health outcomes.

How does the new approval process for treatment units work under HB1431?

HB1431 establishes a "general approval" process for treatment units that meet specific criteria. Units can be approved without field testing if they are certified to comply with certain NSF/ANSI standards or have undergone acceptable testing methods. This streamlined process aims to encourage innovation while maintaining high treatment standards.

Do existing alternative onsite sewage systems need immediate upgrades to meet the new standards?

The bill does not mandate immediate upgrades for existing systems. However, assessing your current systems against the new standards and planning for potential upgrades is advisable to ensure long-term compliance and optimal performance. This is especially important for homeowners selling their property or potential homeowners in the market to purchase a home.

How can Anua's solutions help businesses comply with HB1431?

Anua offers several treatment systems, such as BioCoir and Puraflo Peat Biofilter, which already have TL-3 listed. Under HB1431, AeroCell, PuraSys SBR, Puraflo Dn, and Puraflo Coir are eligible for TL-3 listing. Our flexible "building blocks" approach allows for easy adaptation to new regulations, helping businesses stay compliant and future-proof their wastewater management systems.

What steps should businesses take to prepare for these new regulations?

Businesses should start by thoroughly reviewing their current systems and practices and identifying gaps between current capabilities and the new requirements. Develop a plan for necessary upgrades or changes, and consider seeking expert advice on the most cost-effective ways to achieve compliance. Anua offers compliance assessments and tailored solutions to help guide you through this process.

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